Rotary wire brush.



I 1. KINAN.

' ROTARY WIREBRUSH.

APPLICATION HLED 1AN.13,19|4.

1,171,962. Patented Feb.15,1918;

4 2 SHEETS-SHEET w VV ITNE .8151525 I IN'VENTOR W JOHN INANv I ATTORNEY.

1. KINAN. i ROTARY WIRE BRUSH.

AFPLICATIQN FlLED JAN-13, 1914.

Patented Feb. 15,v 1916.

' 2 SHEETS-SHEET 2.

INVENTOR JOHN KINAN AT TORNEY.

THB COLUMBIA PLANoomPx-l co., WASHINGTDN. D. c.

UNITED strATEsPATENT OFFICE.

JOHN KINAN, or sEA'rTnn, wAsHING'roN.

ROTARY WIRE BR'USH.

. To all whom z't may concern:

Be it known that I, JOHN KINAN, a citien of the United States, and resident of Seattle, King county, INashington, have invented certain new and useful Improvements in Rotary Wire Brushes, of which the following is a specification. i

My invention relates to brushes, and particularly to brushes in which the bristles or brushing elements are made of metal wires or` strips and more particularly to those which are rotated and employed in sweeping street or floor surfaces. V

The object of my invention is to make such a brush which will be superior in its effectiveness, particularly in thoroughness of sweeping effect and in capability of automatic adjustment to fit irregular or uneven surfaces.

I Another object is to provide a cheap type of construction Aand one which'is capable of readily accommodating a large number of bristles or brushing members. l

My invention comprises certain novelconstructive features and combinationswhich will be hereinafter described and particularly pointed out in the claims.

In the accompanying drawings I have shown my invention in the form which is now preferred by me.

Figure 1 shows in transverse section and end view, a segment of a brush built in ac-- cordance with my invention. Fig. 2 is an edge view of a single pair of bristles. Fig. 3 is a side view of a pair of bristles Showing them crossed or twisted as they are 'in the completed brush. Fig. 4 shows a short section of the type of holder used to hold the bristles'in the twisted relation shown in Fig. 3 and to maintain the properjrelative positioneof the individual bristles in the brush. Fig. 5 shows, in side elevation, a

'small section of a brush illustrating the manner of securing the bristles in the brush. Figs. l6, 7 and 8, show different positions `assumed by the individual bristles under different conditions. Fig. 9 is a face view of a small section of the perforated plate which is used to hold the wire. bristles in proper crossed relation.

It has been my desire to construct a brush which may be employed for such purposes as sweeping paved surfaces, in which the bristles, or brushing members, may be made of spring metal. I have found that specification of Letters Patent.

'the body of the bristle;

,and to loosen .and'lift it.

v Patented Feb. 15, 1916.

Application filed January 13, 1914. Serial No.7811,927. i

unsatisfactory operation, for the reason i V that the brush will not yield to pressure ap- 1 plled thereto. If sufficient bristles are usedl to make it an efficient brush, the multiplicity of wires have a combined strength capable 'of sustainingmore weight than it is practicable to apply'thereto, the brush-being i dented by inequalities of the surface being swept, I give the wires forming the bristles,

a' curve, so that force applied lengthwise vthereof may easily bend or buckle them, thus maklng 1t easy todent orl compress the brush and enabling it to cleanly sweep uneven surfaces. [Thepreferred location for this bend 1s at'the Vouter end of the wire, as is shown in Figs. l and 2. i

In Figs-G, 7 and 8 I have shown positions y assumed by the 'wires under different conditions. In Fig. 6 is shownthe position a'ssumed when unaifected by force applied lengthwise thereof. The body 1 is straight.

The end'lO contacts with the surface to be, i, swept at 'a point to one side ofthe line of The direction of this curvature should be in the direction to- VWard which the brush is 'to be moved. In

Fig. 7 is shown the position assumed when pressure is applied. The end 10 being offset I from the direction of the body of the'wire,

`a slight pressure willl buckle it, causing it to assume the bent position .shown in Fig. 7

If at the same time a sweeplng movement be. i glven from an engagementw with the other Should a portion end, as would occur ifit'was incorpora'te'd of the brush be over a depression, the bristlesat this point wouldbe able'to straighten out and thus reach down into the depression and sweep it clean. By placing the wires so that'the bent ends '10 curve toward thedirection in which the surface of'thel brushv Vmoves overthe pavement, a further imporinclination -of wire next the point, causes the' point,`at` all times, to dig under the dirt I With straight wires the effect would lbe for the wire to lincline forwardly, thus acting to press the dirt down instead `of lifting it, making `la much f less effective brush. w straight bristles or brushing elements, are The form of the bristle elements which IA` the wires.

prefer is shown in Figs. 2 and 3. These easier to bend in planes normal to the axis i of the brush.

In making a rotary brush, I prefer to build. the brush in the following manner.

I use a shaft 9 and secure a multiplicity of bristle segments thereon in the following manner. Next the shaft are a series of securing wires 2, extending parallel with the shaft and each passing through the looped vends 11, lof a large nuinbe" of vthe doubled wires. These `wires 2 are secured in place by a series of rings 20 or by other equlvalent means. To secure a larger number of1 the bristles in the brush, I employ a second set of shorter wires 12 which are passed about bars 3, each of these groups of wires being placed between consecutive groups of the longer wires, and forced down between them as is shown in Fig.l. The bars 3 are thus partially held in place by the tension of the longer wires... I have shown. these bars as notched at their outer upper corners, thu's forming tongues 31 at their ends, over which are slipped securing rings 30. The rings 30 and bars 3 thus support each other, the whole being supported by `the longer wires, between which the bars 3 are forced. The rings hold the bars in proximity to the shaft), and the tongues 31 upon the bars 3 support the rings and prevent their removal. If the brush isv of a length to demand it, such ,rings or equivalent securing means may be employed at intermediate points.

As a means for. binding the wires forming the bristles together so that they will in a measure support each other, to keep their Vouter ends spaced, and for other reasons,

I prefer to employ spacing bars or plates 4: which are located toward the* outer ends of A short section of one of these spacing plates orbars vis shown in Fig. 4:. This is of thin metal and has a series of small holes 40 therein. Each hole receives both'arms of a looped or double-bristle wire. By placing these plates at the properdistance from the shaft they engage the wires of 'the groups located adjacent thereto, and

iefl'ectively support each other -to form a-substantial brush cylinder.

If the two sides of a double-bristle wire were inserted through the same hole and also maintained in their normal relative positions, the two ends would coincide in position and the ends of the two would cover no more surface than would one. To avoid this I shift the relative positions of the two sides by crossing them or reversing their normal position without twisting the wire itself, or

as shown in Figs. 3 and 5. The result of this is to separate their ends, as is shown in= Fig. 5,v thus doubling vthe surface swept by their ends. This result follows from the fact that the wires used are not round, but of a fiattened cross section and the holes, while of ample size to accommodate -two wires when their fiat sides are facing each other, are too smallto accommodate the same wires when their majorplanes are common;

that is, when placed edge to edge.V

lVhat I claim as myinvention andl desireA to patent is 1. A brush comprisinig a central core, and o,

having b1'ushin0'-elements each compo'sed of a wire bent upon itself to bring its ends alongslde each other, means for securing sald brushlng elements upono'said core, -a

series of restra'ining plates engaging thel wires intermediate their ends, said plates having holes through each of which is passed the two ends of a single wire, each plate receiving the wires of only a small segment of the brush. f

2. A brush comprisinga cylindrical bore, and haVing-brushing elements each composed of a wire Vof fiattened cross section bent upon'itself'to bring its two ends alongupon itself, means for securing the bent ends side each other, means for securing said,

of the doubled wires' in groups upon' saidv i core, 'plates having series of holes thereinl ,each of a size toreceive the two ends ofa single wire and occupying a position well' ;inward from their outer ends and outward of their supporting means,said wires being i Vcrossed or reversed in position wherathey passrthrough said plates.

4.;A brush comprising. a shaft, bristles composed of looped wires, binding wires extending lengthwise the jshaft and each: through the looped ends of a group of .the

bristle wires,-a series of bars, each extending through the loops of a group of the remaindervof the bristle wires, and means for holding lsaid bars in place between the groups of'bristles of the other set.

5. A rotary brush comprising a. central1 core, bristle wires, each bent upon itself to form aloop, means for securing oneset of: bristles in groups with their looped ends at the central core, and means forsecuring p the remainder of the bristles in groups between the groups of the first namedl set and with their looped ends somewhat outwardly of the central core. i

6. A rotary brush comprising a centra] core, two sets of bristle wires bent upon themselves to form loops, a series of binding wires, each passing through the loops of a group of the wires of one set, means for securing said binding wires against and eX- tending lengthwise the core, a series of bars each passing through theloops of a group of wires of the other set, said bars and their attached wires being alternated in position with the groups' composing 'the other set and at a greater distance from the central core, and rings egaging said bars and holdinfr them in 'position about the core.

l. A rotary brush comprising a central core, two sets of bristle wires bent upon themselves to form loops, a series of binding wires, each pasing through the loops of a group of the wires of one set, means for se- Copies of this patent may berobtained forifive cents each, by addressring the Gommisioner of Patents,

'curing said binding wires against and extending lengthwise the core, a series of bars each passing through the loops of a group of vwires of Athe other set, said bars and and per-forated spacer plates located towardV the outer 'ends of said wires through the ,holes of each'of whichplates a series of the'V bristle wires pass.-

In testimon whereof I have hereunto afiixed my signature this7th day of J anuary, 1914. i

Vitnesses: i

H. L. REYNOLDS, i PENRosE L. MOELWAIN.

Washington, I). 0. V

JOHN KINAN; p 

